Home / 142,378,243.46-196,480,528.51-78,798,706.31

Finding the Fourth Proportional to 142,378,243.46, 196,480,528.51 and 78,798,706.31

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Solution

The fourth proportional to 142,378,243.46, 196,480,528.51 and 78,798,706.31 is: 108,741,413.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,378,243.46 : 196,480,528.51 = 78,798,706.31 : x
  2. Step 2: Convert to fraction form
    142,378,243.46/196,480,528.51 = 78,798,706.31/x
  3. Step 3: Cross multiply
    142,378,243.46x = 196,480,528.51 × 78,798,706.31
  4. Step 4: Simplify right side
    142,378,243.46x = 15,482,411,460,710,670
  5. Step 5: Solve for x
    x = 15,482,411,460,710,670/142,378,243.46
  6. Step 6: Final answer
    x = 108,741,413.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.