Home / 128,017.40-176,662.50-70,657.16

Finding the Fourth Proportional to 128,017.40, 176,662.50 and 70,657.16

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Solution

The fourth proportional to 128,017.40, 176,662.50 and 70,657.16 is: 97,506.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,017.40 : 176,662.50 = 70,657.16 : x
  2. Step 2: Convert to fraction form
    128,017.40/176,662.50 = 70,657.16/x
  3. Step 3: Cross multiply
    128,017.40x = 176,662.50 × 70,657.16
  4. Step 4: Simplify right side
    128,017.40x = 12,482,470,528.50
  5. Step 5: Solve for x
    x = 12,482,470,528.50/128,017.40
  6. Step 6: Final answer
    x = 97,506.05

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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.