Home / 102,312.64-141,123.84-64,005.72

Finding the Fourth Proportional to 102,312.64, 141,123.84 and 64,005.72

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Solution

The fourth proportional to 102,312.64, 141,123.84 and 64,005.72 is: 88,285.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,312.64 : 141,123.84 = 64,005.72 : x
  2. Step 2: Convert to fraction form
    102,312.64/141,123.84 = 64,005.72/x
  3. Step 3: Cross multiply
    102,312.64x = 141,123.84 × 64,005.72
  4. Step 4: Simplify right side
    102,312.64x = 9,032,732,988.36
  5. Step 5: Solve for x
    x = 9,032,732,988.36/102,312.64
  6. Step 6: Final answer
    x = 88,285.60

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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.