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Finding the Fourth Proportional to 98,671.50, 148,075.29 and 85,510.62

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Solution

The fourth proportional to 98,671.50, 148,075.29 and 85,510.62 is: 128,324.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,671.50 : 148,075.29 = 85,510.62 : x
  2. Step 2: Convert to fraction form
    98,671.50/148,075.29 = 85,510.62/x
  3. Step 3: Cross multiply
    98,671.50x = 148,075.29 × 85,510.62
  4. Step 4: Simplify right side
    98,671.50x = 12,662,009,854.58
  5. Step 5: Solve for x
    x = 12,662,009,854.58/98,671.50
  6. Step 6: Final answer
    x = 128,324.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.