Home / 128,038.17-176,702.46-70,688.55

Finding the Fourth Proportional to 128,038.17, 176,702.46 and 70,688.55

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Solution

The fourth proportional to 128,038.17, 176,702.46 and 70,688.55 is: 97,555.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,038.17 : 176,702.46 = 70,688.55 : x
  2. Step 2: Convert to fraction form
    128,038.17/176,702.46 = 70,688.55/x
  3. Step 3: Cross multiply
    128,038.17x = 176,702.46 × 70,688.55
  4. Step 4: Simplify right side
    128,038.17x = 12,490,840,480.06
  5. Step 5: Solve for x
    x = 12,490,840,480.06/128,038.17
  6. Step 6: Final answer
    x = 97,555.60

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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.