Home / 218,792.10-302,007.72-128,176.98

Finding the Fourth Proportional to 218,792.10, 302,007.72 and 128,176.98

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Solution

The fourth proportional to 218,792.10, 302,007.72 and 128,176.98 is: 176,927.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,792.10 : 302,007.72 = 128,176.98 : x
  2. Step 2: Convert to fraction form
    218,792.10/302,007.72 = 128,176.98/x
  3. Step 3: Cross multiply
    218,792.10x = 302,007.72 × 128,176.98
  4. Step 4: Simplify right side
    218,792.10x = 38,710,437,486.29
  5. Step 5: Solve for x
    x = 38,710,437,486.29/218,792.10
  6. Step 6: Final answer
    x = 176,927.95

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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.