Home / 142,036.02-196,009.48-78,373.77

Finding the Fourth Proportional to 142,036.02, 196,009.48 and 78,373.77

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Solution

The fourth proportional to 142,036.02, 196,009.48 and 78,373.77 is: 108,155.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,036.02 : 196,009.48 = 78,373.77 : x
  2. Step 2: Convert to fraction form
    142,036.02/196,009.48 = 78,373.77/x
  3. Step 3: Cross multiply
    142,036.02x = 196,009.48 × 78,373.77
  4. Step 4: Simplify right side
    142,036.02x = 15,362,001,903.34
  5. Step 5: Solve for x
    x = 15,362,001,903.34/142,036.02
  6. Step 6: Final answer
    x = 108,155.68

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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.